]> scripts.mit.edu Git - autoinstallsdev/mediawiki.git/blobdiff - includes/api/ApiQueryCategoryMembers.php
MediaWiki 1.16.0
[autoinstallsdev/mediawiki.git] / includes / api / ApiQueryCategoryMembers.php
index dc5a82653019494bf0bcc81a41e212243fd9e2b0..107f5049c679e7594d0eb80ebddff1b62f108779 100644 (file)
@@ -23,9 +23,9 @@
  * http://www.gnu.org/copyleft/gpl.html
  */
 
-if (!defined('MEDIAWIKI')) {
+if ( !defined( 'MEDIAWIKI' ) ) {
        // Eclipse helper - will be ignored in production
-       require_once ("ApiQueryBase.php");
+       require_once ( "ApiQueryBase.php" );
 }
 
 /**
@@ -35,121 +35,140 @@ if (!defined('MEDIAWIKI')) {
  */
 class ApiQueryCategoryMembers extends ApiQueryGeneratorBase {
 
-       public function __construct($query, $moduleName) {
-               parent :: __construct($query, $moduleName, 'cm');
+       public function __construct( $query, $moduleName ) {
+               parent :: __construct( $query, $moduleName, 'cm' );
        }
 
        public function execute() {
                $this->run();
        }
 
-       public function executeGenerator($resultPageSet) {
-               $this->run($resultPageSet);
+       public function getCacheMode( $params ) {
+               return 'public';
        }
 
-       private function run($resultPageSet = null) {
+       public function executeGenerator( $resultPageSet ) {
+               $this->run( $resultPageSet );
+       }
+
+       private function run( $resultPageSet = null ) {
 
                $params = $this->extractRequestParams();
 
-               if ( !isset($params['title']) || is_null($params['title']) )
-                       $this->dieUsage("The cmtitle parameter is required", 'notitle');
-               $categoryTitle = Title::newFromText($params['title']);
+               if ( !isset( $params['title'] ) || is_null( $params['title'] ) )
+                       $this->dieUsage( "The cmtitle parameter is required", 'notitle' );
+               $categoryTitle = Title::newFromText( $params['title'] );
 
                if ( is_null( $categoryTitle ) || $categoryTitle->getNamespace() != NS_CATEGORY )
-                       $this->dieUsage("The category name you entered is not valid", 'invalidcategory');
+                       $this->dieUsage( "The category name you entered is not valid", 'invalidcategory' );
 
-               $prop = array_flip($params['prop']);
-               $fld_ids = isset($prop['ids']);
-               $fld_title = isset($prop['title']);
-               $fld_sortkey = isset($prop['sortkey']);
-               $fld_timestamp = isset($prop['timestamp']);
+               $prop = array_flip( $params['prop'] );
+               $fld_ids = isset( $prop['ids'] );
+               $fld_title = isset( $prop['title'] );
+               $fld_sortkey = isset( $prop['sortkey'] );
+               $fld_timestamp = isset( $prop['timestamp'] );
 
-               if (is_null($resultPageSet)) {
-                       $this->addFields(array('cl_from', 'cl_sortkey', 'page_namespace', 'page_title'));
-                       $this->addFieldsIf('page_id', $fld_ids);
+               if ( is_null( $resultPageSet ) ) {
+                       $this->addFields( array( 'cl_from', 'cl_sortkey', 'page_namespace', 'page_title' ) );
+                       $this->addFieldsIf( 'page_id', $fld_ids );
                } else {
-                       $this->addFields($resultPageSet->getPageTableFields()); // will include page_ id, ns, title
-                       $this->addFields(array('cl_from', 'cl_sortkey'));
+                       $this->addFields( $resultPageSet->getPageTableFields() ); // will include page_ id, ns, title
+                       $this->addFields( array( 'cl_from', 'cl_sortkey' ) );
                }
 
-               $this->addFieldsIf('cl_timestamp', $fld_timestamp || $params['sort'] == 'timestamp');
-               $this->addTables(array('page','categorylinks'));        // must be in this order for 'USE INDEX'
+               $this->addFieldsIf( 'cl_timestamp', $fld_timestamp || $params['sort'] == 'timestamp' );
+               $this->addTables( array( 'page', 'categorylinks' ) );   // must be in this order for 'USE INDEX'
                                                                        // Not needed after bug 10280 is applied to servers
-               if($params['sort'] == 'timestamp')
-                       $this->addOption('USE INDEX', 'cl_timestamp');
+               if ( $params['sort'] == 'timestamp' )
+                       $this->addOption( 'USE INDEX', 'cl_timestamp' );
                else
-                       $this->addOption('USE INDEX', 'cl_sortkey');
-
-               $this->addWhere('cl_from=page_id');
-               $this->setContinuation($params['continue'], $params['dir']);
-               $this->addWhereFld('cl_to', $categoryTitle->getDBkey());
-               $this->addWhereFld('page_namespace', $params['namespace']);
-               if($params['sort'] == 'timestamp')
-                       $this->addWhereRange('cl_timestamp', ($params['dir'] == 'asc' ? 'newer' : 'older'), $params['start'], $params['end']);
+                       $this->addOption( 'USE INDEX', 'cl_sortkey' );
+
+               $this->addWhere( 'cl_from=page_id' );
+               $this->setContinuation( $params['continue'], $params['dir'] );
+               $this->addWhereFld( 'cl_to', $categoryTitle->getDBkey() );
+               // Scanning large datasets for rare categories sucks, and I already told 
+               // how to have efficient subcategory access :-) ~~~~ (oh well, domas)
+               global $wgMiserMode;
+               $miser_ns = array();
+               if ( $wgMiserMode ) {
+                       $miser_ns = $params['namespace'];
+               } else {
+                       $this->addWhereFld( 'page_namespace', $params['namespace'] );
+               }
+               if ( $params['sort'] == 'timestamp' )
+                       $this->addWhereRange( 'cl_timestamp', ( $params['dir'] == 'asc' ? 'newer' : 'older' ), $params['start'], $params['end'] );
                else
                {
-                       $this->addWhereRange('cl_sortkey', ($params['dir'] == 'asc' ? 'newer' : 'older'), $params['startsortkey'], $params['endsortkey']);
-                       $this->addWhereRange('cl_from', ($params['dir'] == 'asc' ? 'newer' : 'older'), null, null);
+                       $this->addWhereRange( 'cl_sortkey', ( $params['dir'] == 'asc' ? 'newer' : 'older' ), $params['startsortkey'], $params['endsortkey'] );
+                       $this->addWhereRange( 'cl_from', ( $params['dir'] == 'asc' ? 'newer' : 'older' ), null, null );
                }
 
                $limit = $params['limit'];
-               $this->addOption('LIMIT', $limit +1);
+               $this->addOption( 'LIMIT', $limit + 1 );
 
                $db = $this->getDB();
 
                $data = array ();
                $count = 0;
                $lastSortKey = null;
-               $res = $this->select(__METHOD__);
-               while ($row = $db->fetchObject($res)) {
-                       if (++ $count > $limit) {
+               $res = $this->select( __METHOD__ );
+               while ( $row = $db->fetchObject( $res ) ) {
+                       if ( ++ $count > $limit ) {
                                // We've reached the one extra which shows that there are additional pages to be had. Stop here...
                                // TODO: Security issue - if the user has no right to view next title, it will still be shown
-                               if ($params['sort'] == 'timestamp')
-                                       $this->setContinueEnumParameter('start', wfTimestamp(TS_ISO_8601, $row->cl_timestamp));
+                               if ( $params['sort'] == 'timestamp' )
+                                       $this->setContinueEnumParameter( 'start', wfTimestamp( TS_ISO_8601, $row->cl_timestamp ) );
                                else
-                                       $this->setContinueEnumParameter('continue', $this->getContinueStr($row, $lastSortKey));
+                                       $this->setContinueEnumParameter( 'continue', $this->getContinueStr( $row, $lastSortKey ) );
                                break;
                        }
 
-                       if (is_null($resultPageSet)) {
+                       // Since domas won't tell anyone what he told long ago, apply 
+                       // cmnamespace here. This means the query may return 0 actual 
+                       // results, but on the other hand it could save returning 5000 
+                       // useless results to the client. ~~~~
+                       if ( count( $miser_ns ) && !in_array( $row->page_namespace, $miser_ns ) )
+                               continue;
+
+                       if ( is_null( $resultPageSet ) ) {
                                $vals = array();
-                               if ($fld_ids)
-                                       $vals['pageid'] = intval($row->page_id);
-                               if ($fld_title) {
-                                       $title = Title :: makeTitle($row->page_namespace, $row->page_title);
-                                       ApiQueryBase::addTitleInfo($vals, $title);
+                               if ( $fld_ids )
+                                       $vals['pageid'] = intval( $row->page_id );
+                               if ( $fld_title ) {
+                                       $title = Title :: makeTitle( $row->page_namespace, $row->page_title );
+                                       ApiQueryBase::addTitleInfo( $vals, $title );
                                }
-                               if ($fld_sortkey)
+                               if ( $fld_sortkey )
                                        $vals['sortkey'] = $row->cl_sortkey;
-                               if ($fld_timestamp)
-                                       $vals['timestamp'] = wfTimestamp(TS_ISO_8601, $row->cl_timestamp);
-                               $fit = $this->getResult()->addValue(array('query', $this->getModuleName()),
-                                               null, $vals);
-                               if(!$fit)
+                               if ( $fld_timestamp )
+                                       $vals['timestamp'] = wfTimestamp( TS_ISO_8601, $row->cl_timestamp );
+                               $fit = $this->getResult()->addValue( array( 'query', $this->getModuleName() ),
+                                               null, $vals );
+                               if ( !$fit )
                                {
-                                       if ($params['sort'] == 'timestamp')
-                                               $this->setContinueEnumParameter('start', wfTimestamp(TS_ISO_8601, $row->cl_timestamp));
+                                       if ( $params['sort'] == 'timestamp' )
+                                               $this->setContinueEnumParameter( 'start', wfTimestamp( TS_ISO_8601, $row->cl_timestamp ) );
                                        else
-                                               $this->setContinueEnumParameter('continue', $this->getContinueStr($row, $lastSortKey));
+                                               $this->setContinueEnumParameter( 'continue', $this->getContinueStr( $row, $lastSortKey ) );
                                        break;
                                }
                        } else {
-                               $resultPageSet->processDbRow($row);
+                               $resultPageSet->processDbRow( $row );
                        }
                        $lastSortKey = $row->cl_sortkey;        // detect duplicate sortkeys
                }
-               $db->freeResult($res);
+               $db->freeResult( $res );
 
-               if (is_null($resultPageSet)) {
+               if ( is_null( $resultPageSet ) ) {
                        $this->getResult()->setIndexedTagName_internal(
-                                        array('query', $this->getModuleName()), 'cm');
+                                        array( 'query', $this->getModuleName() ), 'cm' );
                }
        }
 
-       private function getContinueStr($row, $lastSortKey) {
+       private function getContinueStr( $row, $lastSortKey ) {
                $ret = $row->cl_sortkey . '|';
-               if ($row->cl_sortkey == $lastSortKey)   // duplicate sort key, add cl_from
+               if ( $row->cl_sortkey == $lastSortKey ) // duplicate sort key, add cl_from
                        $ret .= $row->cl_from;
                return $ret;
        }
@@ -157,24 +176,24 @@ class ApiQueryCategoryMembers extends ApiQueryGeneratorBase {
        /**
         * Add DB WHERE clause to continue previous query based on 'continue' parameter
         */
-       private function setContinuation($continue, $dir) {
-               if (is_null($continue))
+       private function setContinuation( $continue, $dir ) {
+               if ( is_null( $continue ) )
                        return; // This is not a continuation request
 
-               $pos = strrpos($continue, '|');
-               $sortkey = substr($continue, 0, $pos);
-               $fromstr = substr($continue, $pos + 1);
-               $from = intval($fromstr);
+               $pos = strrpos( $continue, '|' );
+               $sortkey = substr( $continue, 0, $pos );
+               $fromstr = substr( $continue, $pos + 1 );
+               $from = intval( $fromstr );
 
-               if ($from == 0 && strlen($fromstr) > 0)
-                       $this->dieUsage("Invalid continue param. You should pass the original value returned by the previous query", "badcontinue");
+               if ( $from == 0 && strlen( $fromstr ) > 0 )
+                       $this->dieUsage( "Invalid continue param. You should pass the original value returned by the previous query", "badcontinue" );
 
-               $encSortKey = $this->getDB()->addQuotes($sortkey);
-               $encFrom = $this->getDB()->addQuotes($from);
+               $encSortKey = $this->getDB()->addQuotes( $sortkey );
+               $encFrom = $this->getDB()->addQuotes( $from );
                
-               $op = ($dir == 'desc' ? '<' : '>');
+               $op = ( $dir == 'desc' ? '<' : '>' );
 
-               if ($from != 0) {
+               if ( $from != 0 ) {
                        // Duplicate sort key continue
                        $this->addWhere( "cl_sortkey$op$encSortKey OR (cl_sortkey=$encSortKey AND cl_from$op=$encFrom)" );
                } else {
@@ -233,7 +252,8 @@ class ApiQueryCategoryMembers extends ApiQueryGeneratorBase {
        }
 
        public function getParamDescription() {
-               return array (
+               global $wgMiserMode;
+               $desc = array (
                        'title' => 'Which category to enumerate (required). Must include Category: prefix',
                        'prop' => 'What pieces of information to include',
                        'namespace' => 'Only include pages in these namespaces',
@@ -246,11 +266,27 @@ class ApiQueryCategoryMembers extends ApiQueryGeneratorBase {
                        'continue' => 'For large categories, give the value retured from previous query',
                        'limit' => 'The maximum number of pages to return.',
                );
+               if ( $wgMiserMode ) {
+                       $desc['namespace'] = array(
+                               $desc['namespace'],
+                               'NOTE: Due to $wgMiserMode, using this may result in fewer than "limit" results',
+                               'returned before continuing; in extreme cases, zero results may be returned.',
+                       );
+               }
+               return $desc;
        }
 
        public function getDescription() {
                return 'List all pages in a given category';
        }
+       
+       public function getPossibleErrors() {
+               return array_merge( parent::getPossibleErrors(), array(
+                       array( 'code' => 'notitle', 'info' => 'The cmtitle parameter is required' ),
+                       array( 'code' => 'invalidcategory', 'info' => 'The category name you entered is not valid' ),
+                       array( 'code' => 'badcontinue', 'info' => 'Invalid continue param. You should pass the original value returned by the previous query' ),
+               ) );
+       }
 
        protected function getExamples() {
                return array (
@@ -262,6 +298,6 @@ class ApiQueryCategoryMembers extends ApiQueryGeneratorBase {
        }
 
        public function getVersion() {
-               return __CLASS__ . ': $Id: ApiQueryCategoryMembers.php 47865 2009-02-27 16:03:01Z catrope $';
+               return __CLASS__ . ': $Id: ApiQueryCategoryMembers.php 69932 2010-07-26 08:03:21Z tstarling $';
        }
-}
\ No newline at end of file
+}